Nutritional information (per serve)

Kilojoules:

1,510kJ

Calories:

361cal

Protein:

34.1g

Total fat:

9.5g

Saturated fat:

3.7g

Carbohydrates:

31.7g

Sugars:

9.5g

Dietary fibre:

4.8g

Sodium:

524mg

Calcium:

68mg

Iron:

4.4mg

Instructions

Instructions and steps:

Step 1 Spray a large frying pan with oil. Add onion and cook for 10–15 minutes over low heat, until very soft. Add 1 tablespoon water occasionally to prevent sticking. Stir in sugar and vinegar. Remove from heat and keep warm.

Step 2 Beat together sour cream and Dijon mustard in a small bowl. Set aside.

Step 3 Spray steaks with oil and season with ground black pepper. Cook over high heat for 1 minute each side, or until browned and just cooked. Remove from heat and rest for 2 minutes.

Step 4 Meanwhile, toast bread and place 4 pieces on plates. Top with lettuce, tomato, beetroot, caramelised onions and steaks. Spoon over mustard cream and top with remaining toast.

Variations

If you want a bit more 'bite' to your sandwich, replace the Dijon mustard with horseradish.